[PATCH] Revert "drm/mgag200: Add vblank support"
Thomas Zimmermann
tzimmermann at suse.de
Tue Oct 15 06:37:13 UTC 2024
This reverts commit 6c9e14ee9f519ee605a3694fbfa4711284781d22.
This reverts commit d5070c9b29440c270b534bbacd636b8fa558e82b.
This reverts commit 89c6ea2006e2d39b125848fb0195c08fa0b354be.
The VLINE interrupt doesn't work correctly on G200SE-A (at least). We
have also seen missing interrupts on G200ER. So revert vblank support.
Fixes frozen displays and warnings about missed vblanks.
[ 33.818362] [CRTC:34:crtc-0] vblank wait timed out
>From the vblank code, the driver only keeps the register constants and
the line that disables all interrupts in mgag200_device_init(). Both
is still useful without vblank handling.
Reported-by: Tony Luck <tony.luck at intel.com>
Closes: https://lore.kernel.org/dri-devel/Zvx6lSi7oq5xvTZb@agluck-desk3.sc.intel.com/raw
Tested-by: Tony Luck <tony.luck at intel.com>
Signed-off-by: Thomas Zimmermann <tzimmermann at suse.de>
---
drivers/gpu/drm/mgag200/mgag200_drv.c | 38 -----------
drivers/gpu/drm/mgag200/mgag200_drv.h | 14 +----
drivers/gpu/drm/mgag200/mgag200_g200.c | 5 --
drivers/gpu/drm/mgag200/mgag200_g200eh.c | 5 --
drivers/gpu/drm/mgag200/mgag200_g200eh3.c | 5 --
drivers/gpu/drm/mgag200/mgag200_g200er.c | 10 +--
drivers/gpu/drm/mgag200/mgag200_g200ev.c | 10 +--
drivers/gpu/drm/mgag200/mgag200_g200ew3.c | 5 --
drivers/gpu/drm/mgag200/mgag200_g200se.c | 10 +--
drivers/gpu/drm/mgag200/mgag200_g200wb.c | 5 --
drivers/gpu/drm/mgag200/mgag200_mode.c | 77 +----------------------
11 files changed, 6 insertions(+), 178 deletions(-)
diff --git a/drivers/gpu/drm/mgag200/mgag200_drv.c b/drivers/gpu/drm/mgag200/mgag200_drv.c
index 42fabe817e21..97fd7eb765b4 100644
--- a/drivers/gpu/drm/mgag200/mgag200_drv.c
+++ b/drivers/gpu/drm/mgag200/mgag200_drv.c
@@ -20,7 +20,6 @@
#include <drm/drm_managed.h>
#include <drm/drm_module.h>
#include <drm/drm_pciids.h>
-#include <drm/drm_vblank.h>
#include "mgag200_drv.h"
@@ -87,34 +86,6 @@ resource_size_t mgag200_probe_vram(void __iomem *mem, resource_size_t size)
return offset - 65536;
}
-static irqreturn_t mgag200_irq_handler(int irq, void *arg)
-{
- struct drm_device *dev = arg;
- struct mga_device *mdev = to_mga_device(dev);
- struct drm_crtc *crtc;
- u32 status, ien;
-
- status = RREG32(MGAREG_STATUS);
-
- if (status & MGAREG_STATUS_VLINEPEN) {
- ien = RREG32(MGAREG_IEN);
- if (!(ien & MGAREG_IEN_VLINEIEN))
- goto out;
-
- crtc = drm_crtc_from_index(dev, 0);
- if (WARN_ON_ONCE(!crtc))
- goto out;
- drm_crtc_handle_vblank(crtc);
-
- WREG32(MGAREG_ICLEAR, MGAREG_ICLEAR_VLINEICLR);
-
- return IRQ_HANDLED;
- }
-
-out:
- return IRQ_NONE;
-}
-
/*
* DRM driver
*/
@@ -199,7 +170,6 @@ int mgag200_device_init(struct mga_device *mdev,
const struct mgag200_device_funcs *funcs)
{
struct drm_device *dev = &mdev->base;
- struct pci_dev *pdev = to_pci_dev(dev->dev);
u8 crtcext3, misc;
int ret;
@@ -226,14 +196,6 @@ int mgag200_device_init(struct mga_device *mdev,
mutex_unlock(&mdev->rmmio_lock);
WREG32(MGAREG_IEN, 0);
- WREG32(MGAREG_ICLEAR, MGAREG_ICLEAR_VLINEICLR);
-
- ret = devm_request_irq(&pdev->dev, pdev->irq, mgag200_irq_handler, IRQF_SHARED,
- dev->driver->name, dev);
- if (ret) {
- drm_err(dev, "Failed to acquire interrupt, error %d\n", ret);
- return ret;
- }
return 0;
}
diff --git a/drivers/gpu/drm/mgag200/mgag200_drv.h b/drivers/gpu/drm/mgag200/mgag200_drv.h
index 4760ba92871b..988967eafbf2 100644
--- a/drivers/gpu/drm/mgag200/mgag200_drv.h
+++ b/drivers/gpu/drm/mgag200/mgag200_drv.h
@@ -391,24 +391,17 @@ int mgag200_crtc_helper_atomic_check(struct drm_crtc *crtc, struct drm_atomic_st
void mgag200_crtc_helper_atomic_flush(struct drm_crtc *crtc, struct drm_atomic_state *old_state);
void mgag200_crtc_helper_atomic_enable(struct drm_crtc *crtc, struct drm_atomic_state *old_state);
void mgag200_crtc_helper_atomic_disable(struct drm_crtc *crtc, struct drm_atomic_state *old_state);
-bool mgag200_crtc_helper_get_scanout_position(struct drm_crtc *crtc, bool in_vblank_irq,
- int *vpos, int *hpos,
- ktime_t *stime, ktime_t *etime,
- const struct drm_display_mode *mode);
#define MGAG200_CRTC_HELPER_FUNCS \
.mode_valid = mgag200_crtc_helper_mode_valid, \
.atomic_check = mgag200_crtc_helper_atomic_check, \
.atomic_flush = mgag200_crtc_helper_atomic_flush, \
.atomic_enable = mgag200_crtc_helper_atomic_enable, \
- .atomic_disable = mgag200_crtc_helper_atomic_disable, \
- .get_scanout_position = mgag200_crtc_helper_get_scanout_position
+ .atomic_disable = mgag200_crtc_helper_atomic_disable
void mgag200_crtc_reset(struct drm_crtc *crtc);
struct drm_crtc_state *mgag200_crtc_atomic_duplicate_state(struct drm_crtc *crtc);
void mgag200_crtc_atomic_destroy_state(struct drm_crtc *crtc, struct drm_crtc_state *crtc_state);
-int mgag200_crtc_enable_vblank(struct drm_crtc *crtc);
-void mgag200_crtc_disable_vblank(struct drm_crtc *crtc);
#define MGAG200_CRTC_FUNCS \
.reset = mgag200_crtc_reset, \
@@ -416,10 +409,7 @@ void mgag200_crtc_disable_vblank(struct drm_crtc *crtc);
.set_config = drm_atomic_helper_set_config, \
.page_flip = drm_atomic_helper_page_flip, \
.atomic_duplicate_state = mgag200_crtc_atomic_duplicate_state, \
- .atomic_destroy_state = mgag200_crtc_atomic_destroy_state, \
- .enable_vblank = mgag200_crtc_enable_vblank, \
- .disable_vblank = mgag200_crtc_disable_vblank, \
- .get_vblank_timestamp = drm_crtc_vblank_helper_get_vblank_timestamp
+ .atomic_destroy_state = mgag200_crtc_atomic_destroy_state
void mgag200_set_mode_regs(struct mga_device *mdev, const struct drm_display_mode *mode,
bool set_vidrst);
diff --git a/drivers/gpu/drm/mgag200/mgag200_g200.c b/drivers/gpu/drm/mgag200/mgag200_g200.c
index 77ce8d36cef0..f874e2949840 100644
--- a/drivers/gpu/drm/mgag200/mgag200_g200.c
+++ b/drivers/gpu/drm/mgag200/mgag200_g200.c
@@ -8,7 +8,6 @@
#include <drm/drm_drv.h>
#include <drm/drm_gem_atomic_helper.h>
#include <drm/drm_probe_helper.h>
-#include <drm/drm_vblank.h>
#include "mgag200_drv.h"
@@ -404,9 +403,5 @@ struct mga_device *mgag200_g200_device_create(struct pci_dev *pdev, const struct
drm_mode_config_reset(dev);
drm_kms_helper_poll_init(dev);
- ret = drm_vblank_init(dev, 1);
- if (ret)
- return ERR_PTR(ret);
-
return mdev;
}
diff --git a/drivers/gpu/drm/mgag200/mgag200_g200eh.c b/drivers/gpu/drm/mgag200/mgag200_g200eh.c
index 09ced65c1d2f..e2305f8e00f8 100644
--- a/drivers/gpu/drm/mgag200/mgag200_g200eh.c
+++ b/drivers/gpu/drm/mgag200/mgag200_g200eh.c
@@ -8,7 +8,6 @@
#include <drm/drm_drv.h>
#include <drm/drm_gem_atomic_helper.h>
#include <drm/drm_probe_helper.h>
-#include <drm/drm_vblank.h>
#include "mgag200_drv.h"
@@ -276,9 +275,5 @@ struct mga_device *mgag200_g200eh_device_create(struct pci_dev *pdev, const stru
drm_mode_config_reset(dev);
drm_kms_helper_poll_init(dev);
- ret = drm_vblank_init(dev, 1);
- if (ret)
- return ERR_PTR(ret);
-
return mdev;
}
diff --git a/drivers/gpu/drm/mgag200/mgag200_g200eh3.c b/drivers/gpu/drm/mgag200/mgag200_g200eh3.c
index 5daa469137bd..11ae76eb081d 100644
--- a/drivers/gpu/drm/mgag200/mgag200_g200eh3.c
+++ b/drivers/gpu/drm/mgag200/mgag200_g200eh3.c
@@ -7,7 +7,6 @@
#include <drm/drm_drv.h>
#include <drm/drm_gem_atomic_helper.h>
#include <drm/drm_probe_helper.h>
-#include <drm/drm_vblank.h>
#include "mgag200_drv.h"
@@ -181,9 +180,5 @@ struct mga_device *mgag200_g200eh3_device_create(struct pci_dev *pdev,
drm_mode_config_reset(dev);
drm_kms_helper_poll_init(dev);
- ret = drm_vblank_init(dev, 1);
- if (ret)
- return ERR_PTR(ret);
-
return mdev;
}
diff --git a/drivers/gpu/drm/mgag200/mgag200_g200er.c b/drivers/gpu/drm/mgag200/mgag200_g200er.c
index 09cfffafe130..c20ed0ab50ec 100644
--- a/drivers/gpu/drm/mgag200/mgag200_g200er.c
+++ b/drivers/gpu/drm/mgag200/mgag200_g200er.c
@@ -8,7 +8,6 @@
#include <drm/drm_drv.h>
#include <drm/drm_gem_atomic_helper.h>
#include <drm/drm_probe_helper.h>
-#include <drm/drm_vblank.h>
#include "mgag200_drv.h"
@@ -206,8 +205,6 @@ static void mgag200_g200er_crtc_helper_atomic_enable(struct drm_crtc *crtc,
mgag200_crtc_set_gamma_linear(mdev, format);
mgag200_enable_display(mdev);
-
- drm_crtc_vblank_on(crtc);
}
static const struct drm_crtc_helper_funcs mgag200_g200er_crtc_helper_funcs = {
@@ -215,8 +212,7 @@ static const struct drm_crtc_helper_funcs mgag200_g200er_crtc_helper_funcs = {
.atomic_check = mgag200_crtc_helper_atomic_check,
.atomic_flush = mgag200_crtc_helper_atomic_flush,
.atomic_enable = mgag200_g200er_crtc_helper_atomic_enable,
- .atomic_disable = mgag200_crtc_helper_atomic_disable,
- .get_scanout_position = mgag200_crtc_helper_get_scanout_position,
+ .atomic_disable = mgag200_crtc_helper_atomic_disable
};
static const struct drm_crtc_funcs mgag200_g200er_crtc_funcs = {
@@ -312,9 +308,5 @@ struct mga_device *mgag200_g200er_device_create(struct pci_dev *pdev, const stru
drm_mode_config_reset(dev);
drm_kms_helper_poll_init(dev);
- ret = drm_vblank_init(dev, 1);
- if (ret)
- return ERR_PTR(ret);
-
return mdev;
}
diff --git a/drivers/gpu/drm/mgag200/mgag200_g200ev.c b/drivers/gpu/drm/mgag200/mgag200_g200ev.c
index 3d48baa91d8b..78be964eb97c 100644
--- a/drivers/gpu/drm/mgag200/mgag200_g200ev.c
+++ b/drivers/gpu/drm/mgag200/mgag200_g200ev.c
@@ -8,7 +8,6 @@
#include <drm/drm_drv.h>
#include <drm/drm_gem_atomic_helper.h>
#include <drm/drm_probe_helper.h>
-#include <drm/drm_vblank.h>
#include "mgag200_drv.h"
@@ -207,8 +206,6 @@ static void mgag200_g200ev_crtc_helper_atomic_enable(struct drm_crtc *crtc,
mgag200_crtc_set_gamma_linear(mdev, format);
mgag200_enable_display(mdev);
-
- drm_crtc_vblank_on(crtc);
}
static const struct drm_crtc_helper_funcs mgag200_g200ev_crtc_helper_funcs = {
@@ -216,8 +213,7 @@ static const struct drm_crtc_helper_funcs mgag200_g200ev_crtc_helper_funcs = {
.atomic_check = mgag200_crtc_helper_atomic_check,
.atomic_flush = mgag200_crtc_helper_atomic_flush,
.atomic_enable = mgag200_g200ev_crtc_helper_atomic_enable,
- .atomic_disable = mgag200_crtc_helper_atomic_disable,
- .get_scanout_position = mgag200_crtc_helper_get_scanout_position,
+ .atomic_disable = mgag200_crtc_helper_atomic_disable
};
static const struct drm_crtc_funcs mgag200_g200ev_crtc_funcs = {
@@ -317,9 +313,5 @@ struct mga_device *mgag200_g200ev_device_create(struct pci_dev *pdev, const stru
drm_mode_config_reset(dev);
drm_kms_helper_poll_init(dev);
- ret = drm_vblank_init(dev, 1);
- if (ret)
- return ERR_PTR(ret);
-
return mdev;
}
diff --git a/drivers/gpu/drm/mgag200/mgag200_g200ew3.c b/drivers/gpu/drm/mgag200/mgag200_g200ew3.c
index dabc778e64e8..31624c9ab7b7 100644
--- a/drivers/gpu/drm/mgag200/mgag200_g200ew3.c
+++ b/drivers/gpu/drm/mgag200/mgag200_g200ew3.c
@@ -7,7 +7,6 @@
#include <drm/drm_drv.h>
#include <drm/drm_gem_atomic_helper.h>
#include <drm/drm_probe_helper.h>
-#include <drm/drm_vblank.h>
#include "mgag200_drv.h"
@@ -199,9 +198,5 @@ struct mga_device *mgag200_g200ew3_device_create(struct pci_dev *pdev,
drm_mode_config_reset(dev);
drm_kms_helper_poll_init(dev);
- ret = drm_vblank_init(dev, 1);
- if (ret)
- return ERR_PTR(ret);
-
return mdev;
}
diff --git a/drivers/gpu/drm/mgag200/mgag200_g200se.c b/drivers/gpu/drm/mgag200/mgag200_g200se.c
index 9dcbe8304271..7a32d3b1d226 100644
--- a/drivers/gpu/drm/mgag200/mgag200_g200se.c
+++ b/drivers/gpu/drm/mgag200/mgag200_g200se.c
@@ -8,7 +8,6 @@
#include <drm/drm_drv.h>
#include <drm/drm_gem_atomic_helper.h>
#include <drm/drm_probe_helper.h>
-#include <drm/drm_vblank.h>
#include "mgag200_drv.h"
@@ -338,8 +337,6 @@ static void mgag200_g200se_crtc_helper_atomic_enable(struct drm_crtc *crtc,
mgag200_crtc_set_gamma_linear(mdev, format);
mgag200_enable_display(mdev);
-
- drm_crtc_vblank_on(crtc);
}
static const struct drm_crtc_helper_funcs mgag200_g200se_crtc_helper_funcs = {
@@ -347,8 +344,7 @@ static const struct drm_crtc_helper_funcs mgag200_g200se_crtc_helper_funcs = {
.atomic_check = mgag200_crtc_helper_atomic_check,
.atomic_flush = mgag200_crtc_helper_atomic_flush,
.atomic_enable = mgag200_g200se_crtc_helper_atomic_enable,
- .atomic_disable = mgag200_crtc_helper_atomic_disable,
- .get_scanout_position = mgag200_crtc_helper_get_scanout_position,
+ .atomic_disable = mgag200_crtc_helper_atomic_disable
};
static const struct drm_crtc_funcs mgag200_g200se_crtc_funcs = {
@@ -517,9 +513,5 @@ struct mga_device *mgag200_g200se_device_create(struct pci_dev *pdev, const stru
drm_mode_config_reset(dev);
drm_kms_helper_poll_init(dev);
- ret = drm_vblank_init(dev, 1);
- if (ret)
- return ERR_PTR(ret);
-
return mdev;
}
diff --git a/drivers/gpu/drm/mgag200/mgag200_g200wb.c b/drivers/gpu/drm/mgag200/mgag200_g200wb.c
index 83a24aedbf2f..a0e7b9ad46cd 100644
--- a/drivers/gpu/drm/mgag200/mgag200_g200wb.c
+++ b/drivers/gpu/drm/mgag200/mgag200_g200wb.c
@@ -8,7 +8,6 @@
#include <drm/drm_drv.h>
#include <drm/drm_gem_atomic_helper.h>
#include <drm/drm_probe_helper.h>
-#include <drm/drm_vblank.h>
#include "mgag200_drv.h"
@@ -323,9 +322,5 @@ struct mga_device *mgag200_g200wb_device_create(struct pci_dev *pdev, const stru
drm_mode_config_reset(dev);
drm_kms_helper_poll_init(dev);
- ret = drm_vblank_init(dev, 1);
- if (ret)
- return ERR_PTR(ret);
-
return mdev;
}
diff --git a/drivers/gpu/drm/mgag200/mgag200_mode.c b/drivers/gpu/drm/mgag200/mgag200_mode.c
index 7159909aca1e..fb71658c3117 100644
--- a/drivers/gpu/drm/mgag200/mgag200_mode.c
+++ b/drivers/gpu/drm/mgag200/mgag200_mode.c
@@ -22,7 +22,6 @@
#include <drm/drm_gem_framebuffer_helper.h>
#include <drm/drm_panic.h>
#include <drm/drm_print.h>
-#include <drm/drm_vblank.h>
#include "mgag200_ddc.h"
#include "mgag200_drv.h"
@@ -227,14 +226,7 @@ void mgag200_set_mode_regs(struct mga_device *mdev, const struct drm_display_mod
vblkstr = mode->crtc_vblank_start;
vblkend = vtotal + 1;
- /*
- * There's no VBLANK interrupt on Matrox chipsets, so we use
- * the VLINE interrupt instead. It triggers when the current
- * <linecomp> has been reached. For VBLANK, this is the first
- * non-visible line at the bottom of the screen. Therefore,
- * keep <linecomp> in sync with <vblkstr>.
- */
- linecomp = vblkstr;
+ linecomp = vdispend;
misc = RREG8(MGA_MISC_IN);
@@ -645,8 +637,6 @@ void mgag200_crtc_helper_atomic_flush(struct drm_crtc *crtc, struct drm_atomic_s
struct mgag200_crtc_state *mgag200_crtc_state = to_mgag200_crtc_state(crtc_state);
struct drm_device *dev = crtc->dev;
struct mga_device *mdev = to_mga_device(dev);
- struct drm_pending_vblank_event *event;
- unsigned long flags;
if (crtc_state->enable && crtc_state->color_mgmt_changed) {
const struct drm_format_info *format = mgag200_crtc_state->format;
@@ -656,18 +646,6 @@ void mgag200_crtc_helper_atomic_flush(struct drm_crtc *crtc, struct drm_atomic_s
else
mgag200_crtc_set_gamma_linear(mdev, format);
}
-
- event = crtc->state->event;
- if (event) {
- crtc->state->event = NULL;
-
- spin_lock_irqsave(&dev->event_lock, flags);
- if (drm_crtc_vblank_get(crtc) != 0)
- drm_crtc_send_vblank_event(crtc, event);
- else
- drm_crtc_arm_vblank_event(crtc, event);
- spin_unlock_irqrestore(&dev->event_lock, flags);
- }
}
void mgag200_crtc_helper_atomic_enable(struct drm_crtc *crtc, struct drm_atomic_state *old_state)
@@ -692,44 +670,15 @@ void mgag200_crtc_helper_atomic_enable(struct drm_crtc *crtc, struct drm_atomic_
mgag200_crtc_set_gamma_linear(mdev, format);
mgag200_enable_display(mdev);
-
- drm_crtc_vblank_on(crtc);
}
void mgag200_crtc_helper_atomic_disable(struct drm_crtc *crtc, struct drm_atomic_state *old_state)
{
struct mga_device *mdev = to_mga_device(crtc->dev);
- drm_crtc_vblank_off(crtc);
-
mgag200_disable_display(mdev);
}
-bool mgag200_crtc_helper_get_scanout_position(struct drm_crtc *crtc, bool in_vblank_irq,
- int *vpos, int *hpos,
- ktime_t *stime, ktime_t *etime,
- const struct drm_display_mode *mode)
-{
- struct mga_device *mdev = to_mga_device(crtc->dev);
- u32 vcount;
-
- if (stime)
- *stime = ktime_get();
-
- if (vpos) {
- vcount = RREG32(MGAREG_VCOUNT);
- *vpos = vcount & GENMASK(11, 0);
- }
-
- if (hpos)
- *hpos = mode->htotal >> 1; // near middle of scanline on average
-
- if (etime)
- *etime = ktime_get();
-
- return true;
-}
-
void mgag200_crtc_reset(struct drm_crtc *crtc)
{
struct mgag200_crtc_state *mgag200_crtc_state;
@@ -774,30 +723,6 @@ void mgag200_crtc_atomic_destroy_state(struct drm_crtc *crtc, struct drm_crtc_st
kfree(mgag200_crtc_state);
}
-int mgag200_crtc_enable_vblank(struct drm_crtc *crtc)
-{
- struct mga_device *mdev = to_mga_device(crtc->dev);
- u32 ien;
-
- WREG32(MGAREG_ICLEAR, MGAREG_ICLEAR_VLINEICLR);
-
- ien = RREG32(MGAREG_IEN);
- ien |= MGAREG_IEN_VLINEIEN;
- WREG32(MGAREG_IEN, ien);
-
- return 0;
-}
-
-void mgag200_crtc_disable_vblank(struct drm_crtc *crtc)
-{
- struct mga_device *mdev = to_mga_device(crtc->dev);
- u32 ien;
-
- ien = RREG32(MGAREG_IEN);
- ien &= ~(MGAREG_IEN_VLINEIEN);
- WREG32(MGAREG_IEN, ien);
-}
-
/*
* Mode config
*/
--
2.46.0
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